珊瑚礁完全介绍英文版ppt

ThecolorfulcoralreefsTheformationofcoralreefsCoralisoneoftheMarinecoelenterates,whichfeedonpreyontheoceantinyplankton,canabsorbthecalciuminthewaterandcarbondioxideinthegrowthprocess,andthensecretelimestone,intohisshellofsurvival.Everysinglecoralonlythegrainsize,theyareagroupofagrouptogathertogether,thegenerationsmetabolism,growth,reproductionandcontinuouslysecretelimestone,andtogether.Thelimestoneafteraftercompaction,petrochemical,formingislandsandreefs,knownascoralreefs.•Coralsarebiological,cnidariadoor,includedanimalssuchasjellyfish,polyps,softcoralandseaanemones.Coralreefs,ismadeupofstonecoralspurposecoralskeletons.Thebonesofmaincomponentiscalciumcarbonate(CaCO3).TheclassificationofthecoralAccordingtothepresenceofsymbioticalgaecanbedividedinto:Aclassofreef-buildingcoralsaresymbioticalgae,livinginshallowareasofthesunshine;Anotherkindisnoalgaesymbiosisofreef-buildingcorals,liveinthedeepsea.TheclassificationofthecoralreefsAccordingtoformdivisionare:fringingreef(fringingreef),thebarrierreefandreefatoll,tableandsometransitiontype瑚礁的分类FringingreefBarrierreefBarrierreefisalsocalledthebarrierreef,likelongbeach,aroundtheoutsideofthefartheroffshore,andseparatedbyawideshallowseasandcoast,orthroughaknownasthewatersofthelagoon.SuchasAustralia'sGreatBarrierReefatollAccordingtothesettlementofDarwin'stheory,themajorityofcoralreefsisthroughvolcanicactivityintobasaltformedislanddevelopment,duetofallingoftheland(orsearise)andformatoll.TheformationoftheGreatBarrierReefCoralpostureisexquisite,colorandlusterisbeautiful,canonlyliveintheyearkeepin22to28degreesofwater,watertemperatureandwatermustbecleanandtransparent.Australia'snortheastcoastoutercontinentalshelfwatersaretheidealconditionsofreproductivecoralpolyps.Coralreefbuildingprocessisveryslow,inthebestcondition,thethickeningofthereefbodyeveryyearbut3-4cm.Somerockthicknesshasamountedtohundredsofmeters,explainthearchitectherehasgonethroughalongtime.AtthesametimealsoshowsthatAustralia'snortheastcoastonthegeologichistoryofsubsidenceprocess,hasexperiencedthepursuitofsunandfoodcoralgrowthup.TheGreatBarrierReefformationYuZhongxinperiod,morethan25millionyearsofhistory.Itsareaisstillexpanding.Itisafterthelasticeage,searosetothepositionafterayearsnow.TheGreatBarrierReefonearthisthemostbeautifuldecorations,likeashiningskyblue,indigo,blueandpurewhitelight,eveniftolookonthemoonisalsoclearlyvisible.Thecolorfulcoral•InthegroupoftheGreatBarrierReef,colorfulcoralreefshavered,pink,green,purple,yellow.Theirshapedifferences,withantlers,ganodermalucidum,lotusleaf,seaweedinthesea-floorspreadingthebeautyofthebody.Thisdistributionofmorethan400differenttypesofcoralreefs,includingtheworld'slargestcoralreef.雀鲷鱼蝴蝶鱼天使鱼海葵海蜇••Australia'sGreatBarrierReefisthenatureofthecreatedamiracle.However,ourchildrenmayneverseethismiracle.OceanographersCharlieOolongaccordingtoareportreleasedrecently,theglobalclimatewarmingwilllettheGreatBarrierReefinashortspanof20yearstimetheworldheritage.WoLongonceisAustraliainstituteofoceanography,chiefscientist.Hesaid,wearepowerless,theGreatBarrierReefwillvanishin20yearstime.